. >> reporter: what we've learned is that the taliban is taking responsibility for the killing of ahmed wali karzai, a very controversial figure in afghanistan, alleged to have tie to the opium trade, alleged to have been on the payroll of the cia, and he is alleged to have ties to numerous other elicit activities. >> he's actually, i think some people would certainly get the impression anyway that he was a guy who played all sides off against the middle, the cia, the world of drugs, in which he was deeply involved in the taliban themselves, so why did they kill him now, do we know? >> so far they have not, why they would kill him, although they called it one of their greate greatest victories in a decade long war against the u.s. and nato forces in afghanistan. why they would want to kill somebody allegedly involved in the opium trade remains to be seen. however, having played all sides he's certain to have made a number of enemies over the years. charles? >> what do we know about the circumstances in which he was killed? >> he was killed -- homes -- i guess one of his guards shot him